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Show that if two soap bubbles of radii a and b coalesce to from a single bubble of radius c. If the external pressure is P, show that the surface tension T of soap solution is

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What is terminal velocity? What is the terminal velocity of a body in a freely falling

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The diameter of ball A is half that of ball B. What will be their ratio of their terminal velocities in

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Find out the dimensions of co-efficient of

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What is the cause of viscosity in a fluid? How does the flow of fluid depend on

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If eight rain drops each of radius 1 mm are falling through air at a terminal velocity of 5 cm | s. If they coalesce to form a bigger drop, what is the terminal velocity of bigger

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Why does the cloud seem floating in the

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A metal plate 5 cm × 5 cm rests on a layer of castor oil 1 mm thick whose coefficient of viscosity is 1.55 `Nsm^(-2)`. What is the horizontal force required to more the plate with a speed of 2 cm |

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A small ball of mass ‘m’ and density ‘d’ dropped in a viscous liquid of density ‘d’. After some time, the ball falls with a constant velocity. What is the viscous force on the

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Two capillary tubes of length 15 cm and 5 cm and radii 0.06 cm and 0.02 cm respectively are connected in series. If the pressure difference a cross the end faces is equal to the pressure of 15 cm high water column, then find the pressure difference across the : → 1) first tube 2) Second

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A metallic sphere of radius `1 × 10^(-3) m` and density `1 × 10^4 kg` | `m^3` enters a tank of water after a free fall through a high ‘h’ in earth’s gravitational field. If its velocity remains unchanged after entering water, determine the value of h. Given :-Co-efficient of viscosity of water `= 1 × 10^(-3) Ns` | `m^2; g = 10 m` | `s^2`; density of water `= 1 × 10^3 kg `|

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Define

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What is the significance of Reynolds’s

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Give two areas where Bernoulli’s theorem is

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Water flows faster than honey.

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What is stoke’s law and what are the factors on which viscous drag

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Water flows through a horizontal pipe of which the cross – section is not constant. The pressure is 1cm of mercury where the velocity is 0.35m/s. Find the pressure at a point where the velocity is

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What is terminal velocity and derive an expression for

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What is equation of continuity? Water plows through a horizontal pipe of radius, 1cm at a speed of 2m/s. What should be the diameter of nozzle if water is to come out at a speed of

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What is Bernoulli’s theorem? Show that sum of pressure, potential and kinetic energy in the streamline flow is

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